We have noted that the .PDF output from Excel is not very good in certain
instances. In a number of special cases basic fills or patterns do not
convert well. For example, we have a number of spreadsheets that use thin
diagonal stripped and gray screen (12%) pattern fills to highlight certain
cells. However, when these worksheets are published to a .PDF file, the
patterns are grossly enlarged and present themselves as thick diagonal lines
or as large polka dots. The refinement of the original fills is completely
lost.

This is odd, given that many other meticulous attributes remain intact
during the conversion. Does anyone have a recommendation as to how we can
preserve the quality of the fill patterns when publishing to a .PDF file?
Is there an Excel option or a .PDF printing option that might control this
aspect of the conversion?